Sharp LC60C6400U - 2 long binks, 5 short blinks error code

[DXseekerMO]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

When you say reverse bias do you mean similar reading? Because testing the other way reads 0.

Make sure the current only flows in one direction

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

When you say reverse bias do you mean similar reading? Because testing the other way reads 0.

[DXseekerMO]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

.4 to .6 is a good diode reading. Just make sure the diode does not reverse bias.

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

I tested D7805 using a diode test on my meter and it read 494. Is that a correct number or does that mean it's bad?

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Should I just give up on this thing?

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Thanks. It's reading .500

[R_J]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Hello R_J



Can you give some guidance how to test this diode with my multimeter?

It's a diode, Use diode test, it should read open one way and .5xx or .6xx the other way. If it reads shorted then it needs to be replaced with the newer version.

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Hello R_J

I don't know exactly which board you have but Sharp did have a problem with D7805 shorting. might be worth checking. original diode is NUR460, change to MUR460

Can you give some guidance how to test this diode with my multimeter?

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Looks like 100 ohm resistor with the writing 2WJ on the side.

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

I'm going to remove R7305 and test it with my multimeter since it's a component that can be fried in similar models IE: LC-70 series

Since there is a repair kit including the KIA378R12PI I think I'm on the right track now.

[nomoresonys]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Your meter might not be ideal for some measurements, you can pick up a digital one at a big box store for around 10 bucks.

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Yeah that's too scary for me, plus my meter only goes to 300V. I don't want to buy another multimeter. Looks like I'm stuck at a dead end for now. The only thing it may very well be is the flex tabs, but removing them from one side would be a foolish 50/50 gamble especially when I see no signs of damage on any of the ICs. Also want to mention again that I was able to watch movies, tv shows with no signs of horizontal lines or banding issues which is a telltale sign of the gate drivers failing according to others. It just suddenly stopped working mid-movie and didn't want to come back on again. 2 -5 code.

I think it is wisest to keep the TV in the back of the room and wait for the same model to come along again with a smashed screen and harvest the boards to play around with.

[nomoresonys]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Just carefully measure the voltage of the big caps as mentioned, with tv powered on, don't touch them with anything but the meter leads because it is DEADLY VOLTAGE. If you're not comfortable doing it, you certainly don't have to.

[Diah]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

the story written at post #1 make me remember an issue at CRT from philips , when the one regulator got defect after replace it it work for short time then get defect again... electronic shops start to sell repair kits to all component related to this regulator to replace at once then it done for ever.. yours story very close to this.. dont trust test parts with meter... find the value of them and replace all.

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

If pin 1 on PL connector on the t-con board reads 3.5V does that mean it's bad? Should it always be 12V when the tv powers on?

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

I see.

[budm]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Yes, if PFC Voltage is working then you should have about 380 ~ 400VDC (when TV is turned on) when measure between the Positive leg and the Negative leg of the caps.

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Are those the two 450V caps you refer to?

[budm]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Get a new meter so you find out if the PFC Voltage booster is working or not.

[Noobwithamultimeter]

Re: Sharp LC60C6400U - 2 long binks, 5 short blinks error code

Here is my multimeter. Maybe it can handle it, I am a noob remember. I'm leaning towards powerboard failure, just need to figure out the components that need replacing. If the ICs on the flex cables fail is it always obvious? I inspected them all and they look very clean or new without and melting or burning on them. Also LED strip is 100% clean looking (now I know when they die sometimes they look the same) but I saw a youtube video of a couple burned ones on a strip out of a similar 60" Sharp where one looked black and another brown. Also I know that an LED strip problem has it's own blink code.